tube 7

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Antennas : 10M
  • DK7ZB Moxon Antennas - DK7ZB- Moxons with Aluminium Tubes, plans for moxon antenna for 6 10 12 15 meters
    [ Hits: 1234 | Votes: 2 | Rating: 6.00 ]
Antennas : 70cm Antennas : J-Pole Internet and Radio : Video
  • How To Make A VO-52 SAT QSO Video - Using a home made 10 element 435 & IO Loop for 145MHz, with a Yaesu FT-847. Simon - 2E0HTS, adjusts his (uplink) transmitted signal to correct the doppler of the Received (downlink) frequency.
    [ Hits: 690 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Amtor
  • AMTOR demonstration - Youtube video by PR7VX using AMTOR to test performance
    [ Hits: 255 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Amplifiers : Acom 1000 Radio Equipment : HF Amplifiers : Ameritron AL-811
  • Ameritron AL-811H tube selection - This article examines the performance of the Ameritron AL-811H amplifier with the supplied 811A tubes and with 572B tubes, and details a procedure for replacement of existing tubes.
    [ Hits: 1183 | Votes: 2 | Rating: 9.50 ]
  • AL811 trouble shooting - Ameritron AL80B AL811H AL572 Amplifier Trouble Shooting. Tubes replacement, resistor changes.
    [ Hits: 811 | Votes: 2 | Rating: 9.50 ]
Radio Equipment : HF Amplifiers : Ameritron AL-811H
  • AL-811H inside - Ameritron AL-811H Amplifier inside 800 Watt PA modified with 4x 572b tubes
    [ Hits: 1410 | Votes: 2 | Rating: 5.50 ]
Radio Equipment : HF Amplifiers : Yaesu FL-2100
  • Yaesu FL2100Z operating tips - The Yaesu FL2100Z is a HF linear amplifier rated for 1200W PEP input, and using two 572B triode tubes. This article explores the recommended operating conditions, and alternatives.
    [ Hits: 657 | Votes: 1 | Rating: 1.00 ]
Radio Equipment : VHF-UHF Handhelds : Baofeng UV-3R Shopping and Services : Antenna Mount
  • Nuxcom.de - Antenna parts for self construction, especially for VHF and UHF Yagis designed by Martin Steyer, DK7ZB, coax cables, connectors, aluminium tubes-
    [ Hits: 697 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Amplifiers : HF Amplifiers
  • HF power amplifier using GI7B - Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.
    [ Hits: 3583 | Votes: 9 | Rating: 4.33 ]
  • HF Power Amplifier by CT1FMS - An RF power Amplifier for HF bands with 3 GI-7B tubes by CT1FMS
    [ Hits: 1447 | Votes: 3 | Rating: 5.00 ]
  • Dentron MLA-2500 Retrofit to the GI-7B - How retrofit the MLA-2500 with the Russian GI-7B tube to replace the 8875's which are both expensive and hard to come by tubes by W4EMF
    [ Hits: 1656 | Votes: 1 | Rating: 5.00 ]
Technical Reference : HF Radios
  • One Valve CW transmitter - This transmitter was first constructed in 1987 and provided the author with his first real rig, capable of distances of more than about 100 metres.Use a 6GV8 tube.
    [ Hits: 382 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Vacuum tube
  • Electron Tubes & Valves Data - KyteLabs InfoBase - Electron Tubes & Valves Data
    [ Hits: 743 | Votes: 3 | Rating: 8.00 ]
  • 23cm GI-7B(T) PA - Tubes used to achieve about 500W on 23 cm band
    [ Hits: 381 | Votes: 0 | Rating: 0.00 ]
  • Vacuum Tubes - Vacuum Tubes History, Theory, and Circuits
    [ Hits: 306 | Votes: 1 | Rating: 8.00 ]
  • Arcing or Gassy 572B Tube - Common problems of the 572B tubes often used in many RF Power Amplifiers
    [ Hits: 277 | Votes: 0 | Rating: 0.00 ]
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